Carbon removal methods


Carbon dioxide removal (CDR), CO₂ removal or carbon removal refers to the human-driven extraction of the greenhouse gas CO₂ from the atmosphere combined with long-term storage. The goal of carbon removal procedures is to decrease atmospheric carbon dioxide levels and to mitigate or even reverse man-made global warming.

Assessment of removal methods

To qualify as carbon removal method we evaluate possible solutions based on the following criteria:

Criteria Description
Net negative emissions The removal method must capture and store more carbon dioxide than is produced by it's construction and operation.
Long term storage Captured CO₂ must be locked away for the long-term. Any captured gas that is used for industrial purposes (e.g. for carbonated drinks) is released back into the atmosphere, therefore not negative emissions.
Additionality The process must not have taken place anyway without the purchasing of the carbon removal. Essentially meaning that this method only works because we are purchasing from it.

These points are generally calculated and assessed in complex life-cycle analysis - that is often verified by independent third parties - so that we can be sure a removal method matches the above criteria.

Making sure negative emissions really are negative

All negative emissions purchased result from after the removal of any emissions from the construction and operation of a method. e.g. if a removal method sequesters 8 tonnes of carbon dioxide but it needed to generate 3 tonnes to do so, only the remaining 5 tonnes are available to purchase.

Different methods

There is no "silver bullet" or single method that has the potential to reverse the volume of CO₂ that has been emitted over the last centuries. We believe in supporting a variety of approaches to remove carbon and aim to make as many as possible available through the CDR Platform.